chapter 3

It would be most appropriate to graph a nominal variable using a

bar chart

A pie chart would be LEAST appropriate for graphically displaying which type of variable?

An ungrouped interval/ratio variable

Which graphic is LEAST suitable for making comparisons among groups?

Pie chart

In a pie chart, certain proportions can be highlighted by

exploding or moving segments of the pie

A frequency polygon is an appropriate graphic design device for nominal and ordinal level variables.

false

A time series chart displays changes in a variable at one point in time.

false

In a pie chart, the size of the slices depends on whether or not proportions or percentages are displayed.

false

Nominal variables are typically displayed using a histogram.

false

A graph showing the differences in frequencies, proportions, or percentages among the categories of an interval/ratio variable is referred to as a

histogram

In order to make a statistical map easier to read, it's important to

keep the data under five categories

For which of the following variables should the bars in a graph be separated rather than contiguous?

occupation

The most common distortions in graphical representations occur when the researcher

shrink or expands either axis

The different graphs in the chapter are used to tell a story about

the elderly in the united states

In a time series chart, which variable of interest is usually placed along the horizontal axis?

time

Changes in a variable at different points in time are graphically displayed using a

time- series chart

A bar graph is an appropriate graphic device for nominal and ordinal level variables

true

A histogram is commonly used for continuous variables.

true